Aurelio Peccei

• Before it is too late
• One hundred pages for the future
• The chasm ahead
• Regionalism and the new international economic order
• The human quality
• 100 pages pour l'avenir
• 101 Pages for the Future
• Ante el abismo
• Campanello d'allarme per il XXI secolo
• Cento pagine per l'avvenire
• Facing unprecedented challenges
• Kon cha sai kenpai